نتایج جستجو برای: physical phenomena

تعداد نتایج: 767543  

Journal: :Science 1990
L Schulman

Springer-Verlag Berlin and Heidelberg GmbH & Co. K. Paperback. Book Condition: New. Paperback. 233 pages. Dimensions: 9.3in. x 6.0in. x 0.6in.This thoroughly revised 5th edition of Zehs classic text investigates irreversible phenomena and their foundation in classical, quantum and cosmological settings. It includes new sections on the meaning of probabilities in a cosmological context, irrevers...

Journal: :Annual review of biophysics 2010
Itay Budin Jack W Szostak

Recent synthetic approaches to understanding the origin of life have yielded insights into plausible pathways for the emergence of the first cells. Here we review current experiments with implications for the origin of life, emphasizing the ability of unexpected physical processes to facilitate the self-assembly and self-replication of the first biological systems. These laboratory efforts have...

Journal: :computational methods for differential equations 0
ozkan guner dumlupınar university, school of applied sciences, department of management information systems, kutahya-turkey

in this paper, we obtained the 1-soliton solutions of the symmetric regularized long wave (srlw) equation and the (3+1)-dimensional shallow water wave equations. solitary wave ansatz method is used to carry out the integration of the equations and obtain topological soliton solutions the physical parameters in the soliton solutions are obtained as functions of the dependent coefficients. note t...

2016
Nicolás Pérez Flávio Buiochi Marco Aurélio Brizzotti Andrade Julio Cezar Adamowski

Piezoelectric materials characterization is a challenging problem involving physical concepts, electrical and mechanical measurements and numerical optimization techniques. Piezoelectric ceramics such as Lead Zirconate Titanate (PZT) belong to the 6 mm symmetry class, which requires five elastic, three piezoelectric and two dielectric constants to fully represent the material properties. If los...

Journal: :iranian journal of science and technology (sciences) 2015
c. m. khalique

this paper aims to study a generalized double sinh-gordon equation, which appears in several physical phenomena such as integrable quantum field theory, kink dynamics and fluid dynamics. lie symmetry analysis together with the simplest equation method is used to obtain exact solutions for this equation. moreover, we derive conservation laws for the equation by using two different approaches, na...

2015
Omjyoti Dutta Anna Przysiężna Jakub Zakrzewski

Ultracold atoms in optical lattices serve as a tool to model different physical phenomena appearing originally in condensed matter. To study magnetic phenomena one needs to engineer synthetic fields as atoms are neutral. Appropriately shaped optical potentials force atoms to mimic charged particles moving in a given field. We present the realization of artificial gauge fields for the observatio...

2017
Haotian Wu Shuo Liu Xiang Wan Lei Zhang Dan Wang Lianlin Li Tie Jun Cui

Metamaterials are artificial structures composed of subwavelength unit cells to control electromagnetic (EM) waves. The spatial coding representation of metamaterial has the ability to describe the material in a digital way. The spatial coding metamaterials are typically constructed by unit cells that have similar shapes with fixed functionality. Here, the concept of frequency coding metamateri...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2014
Arjen van Elteren Inti Pelupessy Simon Portegies Zwart

Astronomical phenomena are governed by processes on all spatial and temporal scales, ranging from days to the age of the Universe (13.8 Gyr) as well as from kilometre size up to the size of the Universe. This enormous range in scales is contrived, but as long as there is a physical connection between the smallest and largest scales it is important to be able to resolve them all, and for the stu...

2001
C. Radhakrishnan

Taking the example of Koretweg–de Vries equation, it is shown that soliton solutions need not always be the consequence of the trade-off between the nonlinear terms and the dispersive term in the nonlinear differential equation. Even the ordinary one dimensional linear partial differential equation can produce a soliton. Solitary waves and solitons are often described [1-8] as a consequence of ...

2007
H. Joachim Schlichting

Physical education contributes in a special way to general education of young people. Therefore, physics lessons may not be restricted to pure physical topics but have to be combined with everyday life phenomena and problems. However, this is not as simple as it may appear at first sight, for the everyday life world does not contain the physical aspects for direct reading. As the pupils and stu...

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